log10            2897 ext/standard/basic_functions.c 	PHP_FE(log10,															arginfo_log10)
log10              41 ext/standard/math.c 		result = (int)floor(log10(value));
log10             699 ext/standard/math.c PHP_FUNCTION(log10)
log10             706 ext/standard/math.c 	RETURN_DOUBLE(log10(num));
log10              42 ext/standard/php_math.h PHP_FUNCTION(log10);